//判断<{$lang.weight}>偏差 返回true=>正确 false=>错误
function valWeight(){
    oldproductWeight = $("#qcConfrimForm [name='old_product_weight']").val()*1;
    productWeight = $("#qcConfrimForm [name='product_weight']").val()*1;
    if((oldproductWeight)<0.01){
        if((productWeight)<0.01){
            return true;
        }else if((productWeight)>0.01){
            return false;
        }else{
            return false;
        }
    }else if((oldproductWeight)>0.01){
        if(Math.abs((oldproductWeight)-(productWeight))<0.005){
            return true;
        }else{
            return false;
        }
    }
    return false;
}